Measurement - Circles and Sectors Flashcards
1
Q
how to find the circumference of a circle?
A
π x diameter
2
Q
how to find the area of a cirlce?
A
πR²
3
Q
how to find the area of a quadrant?
A
πR²/ 4
4
Q
how to find the perimeter of a quadrant?
A
π x diameter/ 4 + diameter
5
Q
how to find the area of a semi circle?
A
πR²/ 2
6
Q
how to find the perimeter of a semi circle?
A
π x diameter/ 2 + diameter
7
Q
how to find perimeter of a sector?
A
the angle inside of the sector/ 360 x π x 4
8
Q
how to find the area of a sector?
A
the angle inside of the sector/ 360 x π x R²